EP1513126A1 - Système de tableau - Google Patents

Système de tableau Download PDF

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Publication number
EP1513126A1
EP1513126A1 EP04020360A EP04020360A EP1513126A1 EP 1513126 A1 EP1513126 A1 EP 1513126A1 EP 04020360 A EP04020360 A EP 04020360A EP 04020360 A EP04020360 A EP 04020360A EP 1513126 A1 EP1513126 A1 EP 1513126A1
Authority
EP
European Patent Office
Prior art keywords
whiteboard
board
panel system
panel
interactive operation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04020360A
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German (de)
English (en)
Inventor
Gerd Conen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Conen GmbH and Co KG
Original Assignee
Conen GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=29724202&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1513126(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Conen GmbH and Co KG filed Critical Conen GmbH and Co KG
Publication of EP1513126A1 publication Critical patent/EP1513126A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B1/00—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00—Electrically-operated educational appliances
    • G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip

Definitions

  • the invention relates to a panel system for use in teaching and Demonstration purposes in education and training events for the classroom teaching in teaching institutions, such as B. in schools, academies or Universities.
  • EP 03 47 725 A2 discloses an electronic panel for processing image information corresponding to the image displayed on the writing surface or the like, as well as associated assistive devices such as writing utensils.
  • the electronic board comprises a writing tool having a first resonant circuit, a quenching tool having a second resonant circuit, a panel body having an electronic writing surface, a detection member arranged in the panel body in close proximity to the writing surface, and a generator capable of generating electric waves Generate waves for exciting at least one of the oscillating circuits, a coordinate detecting means for determining coordinate values and an identifying means for identifying the writing and erasing tool.
  • the writing tool and the erasing tool have oscillating circuits whose tuning frequency is different from each other.
  • JP 62-114370 A describes an electronic board system for identifying letters and graphics in a particularly good quality.
  • the subject of this invention is a panel system comprising two monitors and two electronically scannable panels. Each one electronic board and a monitor are arranged within a space (A to B) and thus form an associated pair.
  • a to B space
  • recognition software When the operator in the room B writes a character or a graphic on the surface of the electronic board by means of a writing instrument, the position of that character or graphic is recognized by means of recognition software and transmitted to the associated monitor as an "actual" character or graphic. Furthermore, the transmission of this "actual” character takes place on the monitor in room A or optionally on the associated electronic board.
  • This panel system is designed exclusively as an electronic panel and associated monitor with control or recognition software.
  • the subject of JP 61-041266 A is an electronic wall panel on the front side of which a writable medium guided by means of rollers is formed and on the back of which a whiteboard is formed.
  • users write patterns, characters, etc. on the pen-writeable medium, and a button of a control panel is pressed by the user to record those patterns, characters, etc.
  • an optical reading element reads the patterns, characters, etc. in rolling up this recordable medium by means of a holding element.
  • These written patterns, characters, etc. are recorded in the form of digital signals from a recording part using an amplifier and an analog-to-digital converter.
  • the whiteboard placed on the back side of the electronic wall panel can be used by turning part of the main body of the wall panel 180 °.
  • a particular disadvantage of this invention is the fact that the whiteboard (back of the blackboard) and the writable medium (front of the blackboard) can only be used alternatively, but not simultaneously.
  • JP 10-067198 A describes an electronic blackboard developed for the purpose of complete removal without any residue from letters and characters written on the blackboard.
  • the electronic wall panel here consists of a writing surface, which is held in a frame. In the region of the vertically extending side edges of the writing surface two parallel spaced rails are placed.
  • the eraser according to the invention consists of a felt material formed as a fiber, which contacts the writing surface under pressure, and thereby extends between the rails.
  • the object of the invention is therefore to develop a board system, with the while maintaining the educational benefits of a chalk board or a steel enamelled white or green board and the like, as well as using New Communication systems and modern presentation techniques the methodology and didactics in the effective transfer of knowledge more user-friendly and more targeted.
  • a panel system is provided that from at least a first, as a chalk board or a enamelled white or green board and the like a second, designed as a whiteboard projection and Presentation board with a surface writable with whiteboard markers exists, with the chalk board and the whiteboard in a common Frame structure are summarized. It can the Frame construction of the panel system in the horizontal direction (e.g. Folding board) or vertically (e.g., multi-surface pylone board) consist of extending panels.
  • a first as a chalk board or a enamelled white or green board and the like
  • a second designed as a whiteboard projection and Presentation board with a surface writable with whiteboard markers exists, with the chalk board and the whiteboard in a common Frame structure are summarized. It can the Frame construction of the panel system in the horizontal direction (e.g. Folding board) or vertically (e.g., multi-surface pylone board) consist of extending panels.
  • the as a surface panel in a vertical arrangement or central area of a folding panel executed whiteboard has according to the invention an electromagnetic or touch-sensitive surface on, which in conjunction with an internal Controller for controlling the interactive operation of the whiteboard and an external PC and projector as well as in the case of electromagnetic surface from the user to leading electronic pen or in the case of the touch-sensitive surface by the user to be applied mechanical pressure allows interactive operation.
  • Both panels in combination with the frame structure receiving them, form a panel system that combines the benefits of a chalk board or steel enameled white or green panel and the like, as well as an interactive whiteboard in a small space. Since the panel system is usually arranged on an end wall of the room in the middle of the wall surface, the focus of the viewer is directed only to a narrow wall section, which increases the concentration of the participants in a presentation.
  • the chalk board or a steel enamelled white or green board and the like, as well as the projection and presentation board can be used depending on the task either by the speaker at the same time or alternately. Since both panels are combined in a common frame construction, they can be conveniently adjusted in their position against each other or each other or moved.
  • the board surfaces of the panels have approximately the same extent and thickness Dimensions on what the production of the frame construction significantly simplified.
  • the frame construction preferably consists of a Alloy and has to adjust the panels one within the Frame construction arranged and guided mechanism.
  • the whiteboard which is equipped with a wipeable smooth white and electromagnetic or touch-sensitive plastic surface, has three different functions.
  • the white reflection-free plastic surface serves as a suitable projection surface for overhead projections or projector projections.
  • the whiteboard may be conventionally described with a conventional whiteboard marker and cleaned again using a suitable sponge or cloth.
  • a significant feature of the whiteboard, however, is that it is usable as an interactive digitized tablet.
  • the whiteboard has a controller with a transmitting and receiving unit that communicates wirelessly with a PC or attached peripherals.
  • the connection between the controller and the PC is bidirectional, ie data packets are sent to and from the PC.
  • the wireless radio link between the controller of the whiteboard and the associated PC are provided with appropriate software and possibly an electronic pen for the corresponding contacting of the pixel fields of the whiteboard.
  • the whiteboard becomes so in the activated state by the controller digitized that formed not visible to the user pixel fields become.
  • These pixel fields are created by means of the electronic pen (electromagnetic surface) or by mechanical pressure (touch-sensitive surface) according to the desired function contacted, these signals by means of the controller as a real-time data streaming to the PC.
  • the thereby made Changes or additions to the content of a projected presentation slide become almost without a time offset by means of a projector directly displayed.
  • the electronic pen is for Contacting the pixel fields as a pointer instrument as one from the state of Technology previously known computer mouse, namely with a menu and a context menu button. These two buttons are located easy to use at the bottom of the electronic pen.
  • the electronic pen also has an electronic end at one axial end Eraser on.
  • the Speaker On the front of the whiteboard are more advantageous several Function fields arranged, which can be preassigned or freely programmed can be. By contacting these functional fields, the Speaker in a very simple way to launch desired applications and thus trigger the activation of the interactive whiteboard based on hardware.
  • the Contacting is usually done by the fingers of the speaker.
  • Another way of activating the interactive whiteboard To trigger it is on the PC with a mouse click the appropriate software control routine to start.
  • the interactive operation of the whiteboard thus ensures active participation the listener during the presentation and leads to a more lively Presentation.
  • connection between the controller of the whiteboard, the PC and optionally also an output device is as a wireless connection educated. This can on the often expensive and inflexible wiring of the Components are dispensed with.
  • the one with the wireless connection associated disadvantages such. B. the lower transfer rates and the regulatory limitations of the frequency spectrum used, Here are the significant advantages in the flexibility of the arrangement of Components, easy retrofitting and expandability as well the unnecessary maintenance compared.
  • To be used the radio or infrared transmission.
  • wireless transmission can wireless Networks (WLANs) or Bluetooth connections.
  • WLANs wireless Networks
  • Bluetooth connections ensures a cost effective Access to wireless communication networks and provides the basis for compatible devices. Bluetooth supports data and Speech recognition services and is therefore particularly suitable for Connection between the controller of the whiteboard, the PC and possibly also an output device.
  • a particular advantage of the invention is also that the Control of interactive whiteboard necessary software - on Windows based - is. On the one hand, this usually ensures the compatibility of the PC to the existing intranet of the further education home and on the other hand a quick training period of the speakers in the invention Panel system with its communicating peripherals. With the other The tabletop system can also be used for enhancing Bluetooth technology Designers and designers preferred - on Apple Macintosh or Linux based - computer system can be used.
  • Digitizing trays provided via the wireless radio link with the Controllers of the whiteboard are coupled. Documents, pictures or Annotations can be easily projected onto the whiteboard. When using multiple digitizing tablets, multiple groups can be used common tasks and projects work, what the flexibility of Lesson planning significantly increased.
  • all panel models known hitherto which have at least two panel surfaces, can be designed in the sense of the panel system according to the invention.
  • the field of application of the invention thus extends from folding sliding panels, over folding pylon panels to two-ply pylon panels or pylone double panels.
  • the center panel of a folding sliding board can act as an interactive whiteboard, during which the two outer hinged wings have a standard metallic and possibly also magnetic chalk-writable surface.
  • FIG. 1 shows a detailed representation of the panel system 11 according to the invention using the example of the two-layer pylon panel.
  • the panel system 11 consists of a combination of a conventional chalk board 1 and an interactive whiteboard 2.
  • the chalk board 1 and the whiteboard 2 are here combined in a common frame construction 3, which is formed in the illustrated figure as opposing pylons. From the viewer's perspective, the chalk board 1 is arranged behind the whiteboard 2 and is almost completely covered by this, as shown.
  • the surface areas of the chalk board 1 and the whiteboard 2 in extent and thickness in approximately the same dimensions.
  • the frame structure 3 For receiving and guiding the chalk board 1 and the whiteboard 2, the frame structure 3 has two unillustrated parallel run rails into which the complementary, passable rollers or sliding elements which are attached to the end faces of the panels 1, 2 engage positively.
  • the chalk board 1 and the whiteboard 2 are coupled by means of an unillustrated mechanism such that upon a manual lowering of the whiteboard 2 in the direction of the floor, the chalk board 1 can be moved to the upper unillustrated stop of the pylons.
  • the mechanism also has the task to keep the differently heavy chalk board 1 and whiteboard 2 constantly in balance, so that only a minimal amount of force is necessary to move them against each other.
  • the whiteboard 2 has two additional functions besides the usable projection surface.
  • the wipeable smooth white plastic surface can be described with a whiteboard marker in a conventional manner and be cleaned again by means of a suitable sponge or cloth.
  • the board surface 4 of the whiteboard 2 is formed electromagnetically, which allows an interactive operation thereof.
  • the interactive operation further requires - as shown in Fig. 2 - a controller 5, a PC 6 with appropriate software and a user-leading electronic pen 7.
  • the controller 5 is on the back 2.1 of the whiteboard 2 adjacent to its upper longitudinal edge 2.3 arranged and is in radio contact with a PC 6, which is arbitrarily placed within the presentation room, but preferably directly in the vicinity of the speaker.
  • a wireless radio connection 8.1 a contemporary Bluetooth connection is used, which has the advantage that the data streaming from and to the PC 6 can be realized in real time without time delay.
  • the controller 5 can optionally communicate with other electronic devices that operate in accordance with the Bluetooth standard.
  • the interactive operation is ultimately realized by means of a user-leading electronic pen 7, which is guided for operation on the electromagnetic surface 4 of the whiteboard 2.
  • This pen 7 as a pointer instrument is constructed like a computer mouse previously known from the prior art, namely with a menu and a context menu key. These two buttons are conveniently located at the bottom of the electronic pen 7.
  • Activation of the whiteboard's interactive operation can be triggered in a variety of ways, either hardware-based or software-based.
  • a plurality of functional fields 2.2 are arranged on the left-hand side of the surface 4 of the whiteboard 2 for hardware-based activation of the interactive operation, which can be pre-assigned or freely programmable.
  • the pre-assigned function fields 2.2 for example, certain programs or applications can be invoked by merely tapping by the user.
  • Freely programmable function fields 2.2 extend the application spectrum to a special degree. Amongst others, stored presentation slides can be called up with just one keystroke.
  • the software-based activation of the interactive operation of the whiteboard 2 requires a corresponding software, which must be comfortably started by the user on the PC 6 only with a mouse click.
  • the actual interactive operation of the whiteboard 2 however, additionally requires an electronic pin 7 for contacting the pixel fields formed by the controller 5 on the whiteboard 2.
  • Fig. 2 illustrates a signal flow image when using the whiteboard 2 of the panel system 11 as an interactive school board.
  • the arrows symbolize the direction of the data streams, wherein a continuous line a wired data line 8.2, a dash-dot line a wireless radio link 8.1 and a dash-and-dash line a projection beam of a light-emitting peripheral device, eg. B. a projector 9, represent.
  • the PC generally designated by the reference numeral 6, generates a computer screen that is projected onto the whiteboard 2 of the panel system 11 by means of a beamer 9.
  • the connection between the PC 6 and the projector 9 is preferably designed as a wired data line 8.2.
  • the security against destruction and the generation of an undistorted projection image of the projector 9 is mounted directly under the ceiling of the presentation room by means of a not shown holder.
  • the wiring between the mounting location of the beamer 9 and the installation of the PC 6 can be done in the context of any renovation work in-wall or subsequently surface-mounted.
  • the digital information associated with the computer screen is exchanged between the PC 6 and the internal controller 5 of the whiteboard 2 by means of a wireless bidirectional radio link 8.1.
  • the controller 5 is disposed on the back side 2.1 of the whiteboard 2 adjacent to its upper longitudinal edge 2.3 and serves to control the interactive operation of the whiteboard 2 in use as a schoolboard.
  • the controller 5 digitizes the electromagnetic surface 4 of the whiteboard 2 to form pixel areas not described in detail. These pixel fields, which are not visible to the user, when touched by means of an electronic pen 7 generate a switching signal which knows only two states.
  • the software of the controller 5 processes these signals and transmits them to the PC 6.
  • the wireless radio link 8.1 between the PC 6 and the controller 5 of the whiteboard 2 is preferably formed as a Bluetooth connection, which on the one hand to a real-time data streaming and on the other Connection without data packet loss leads.
  • an output device designed as a printer 10 can be connected to the PC 6 in order to provide desired digital information to the user in printed form.
  • the connection between the printer 10 and the PC 6 is preferably also formed as a wireless Bluetooth connection 8.1, which greatly simplifies the printer usage.
  • a printer can be positioned at a neutral, freely accessible space within the education and training home, so that it can be used by multiple users at the same time, without having to take account of the occupancy.

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  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Drawing Aids And Blackboards (AREA)
  • Facsimiles In General (AREA)
EP04020360A 2003-09-04 2004-08-27 Système de tableau Withdrawn EP1513126A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20314021U 2003-09-04
DE20314021U DE20314021U1 (de) 2003-09-04 2003-09-04 Tafelsystem

Publications (1)

Publication Number Publication Date
EP1513126A1 true EP1513126A1 (fr) 2005-03-09

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ID=29724202

Family Applications (1)

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EP04020360A Withdrawn EP1513126A1 (fr) 2003-09-04 2004-08-27 Système de tableau

Country Status (2)

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EP (1) EP1513126A1 (fr)
DE (1) DE20314021U1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005054466A1 (de) * 2005-11-10 2007-05-16 Gfp Ges Produktivitaetsplanung & Produktentwicklung Mbh Vorrichtung zum Halten einer Aktivtafel
DE202009001629U1 (de) 2008-06-11 2009-06-25 GfP (Gesellschaft für Produktivitätsplanung und Produktentwicklung) mbH Vorrichtung zum Halten einer Aktivtafel
DE102010010742A1 (de) 2010-03-02 2011-09-08 GfP (Gesellschaft für Produktivitätsplanung und Produktentwicklung) mbH Vorrichtung zum Halten einer Tafel und Tafelsystem
DE102010046630A1 (de) 2010-09-17 2012-03-22 GfP (Gesellschaft für Produktivitätsplanung und Produktentwicklung) mbH Tafelsystem umfassend wenigstens zwei Tafeln, Verriegelungsmechanismus für ein Tafelsystem und ein Verfahren zur Bewegung einer Tafel des Tafelsystems
CN102799334A (zh) * 2011-05-25 2012-11-28 孙怀宽 一种新型的物联网智能白板
CN104731404A (zh) * 2014-12-10 2015-06-24 朱云 新型黑板
DE102022003063A1 (de) 2022-08-22 2024-02-22 heinekingmedia GmbH Tafelvorrichtung, Tafelanordnung mit einer einbringbaren Zwischenschicht, Tafelsystem, Verfahren zum Herstellen oder Nachrüsten einer Tafel sowie die Verwendung einer einbringbaren Zwischenschicht

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010015978B4 (de) * 2010-03-15 2016-09-29 Waldner Labor- Und Schuleinrichtungen Gmbh Dresden Tafelanordnung
CN107221208A (zh) * 2017-07-18 2017-09-29 安庆状元郎电子科技有限公司 一种互动式电子黑板
CN108717807A (zh) * 2018-03-31 2018-10-30 南京北冶机电设备有限公司 智慧教育系统

Citations (2)

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Publication number Priority date Publication date Assignee Title
EP0600576A1 (fr) * 1992-10-07 1994-06-08 MICROFIELD GRAPHICS, Inc. Système d'acquisition de données graphiques, sensible au champ électromagnétique, basé sur un code
WO2002039308A1 (fr) * 2000-11-13 2002-05-16 Gtco Cal Comp Systeme d'entree collectif

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0600576A1 (fr) * 1992-10-07 1994-06-08 MICROFIELD GRAPHICS, Inc. Système d'acquisition de données graphiques, sensible au champ électromagnétique, basé sur un code
WO2002039308A1 (fr) * 2000-11-13 2002-05-16 Gtco Cal Comp Systeme d'entree collectif

Non-Patent Citations (6)

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E-CHALK: "Beispielszenarien", 19 June 2003 (2003-06-19), pages 1 - 2, XP002304045, Retrieved from the Internet <URL:http://web.archive.org/web/20030619012133/http://kazan.inf.fu-berlin.de/echalk/iscenarios_d.html> [retrieved on 20041104] *
GTCO CALCOMP: "Meeting Suite interwrite", December 2002 (2002-12-01), pages 1 - 2, XP002304046, Retrieved from the Internet <URL:http://www.gtcocalcomp.com/InterWriteFiles/broiwmeetingsuite.pdf> [retrieved on 20041104] *
GTCO CALCOMP: "School Suite interwrite - teach from anywhere in the classrom", 15 July 2003 (2003-07-15), pages 1 - 2, XP002304044, Retrieved from the Internet <URL:http://web.archive.org/web/20030715195108/http://gtcocalcomp.com/InterWriteFiles/broschoolsuite.pdf> [retrieved on 20041104] *
HARPA: "Wissenswertes über das Schienensystem Mediaflex", 31 August 2002 (2002-08-31), pages 1 - 2, XP002304047, Retrieved from the Internet <URL:http://web.archive.org/web/20020831155501/www.hapra.at/produkte/praesentation/default.asp?hOpen=pt_glossary/startpages/schienensystem.start.htm> [retrieved on 20041104] *
NEC: "NEC WT600. Innovative mirror projection method for the DLPTM projector. The projector with the worlds shortest throwing distance !", March 2003 (2003-03-01), pages 1 - 2, XP002304101, Retrieved from the Internet <URL:http://www.nexnix.co.uk/projectors/docs/wt600.pdf> [retrieved on 20041105] *
TEAMBOARD: "Powerful, Effective Communications... and more!", 1 April 2002 (2002-04-01), pages 0 - 15, XP002304043, Retrieved from the Internet <URL:http://web.archive.org/web/20030814012227/http://www.teamboard.com/library/pdfs.html> [retrieved on 20041104] *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005054466A1 (de) * 2005-11-10 2007-05-16 Gfp Ges Produktivitaetsplanung & Produktentwicklung Mbh Vorrichtung zum Halten einer Aktivtafel
DE102005054466B4 (de) * 2005-11-10 2010-06-24 GfP (Gesellschaft für Produktivitätsplanung und Produktentwicklung) mbH Vorrichtung zum Halten einer Aktivtafel
DE202009001629U1 (de) 2008-06-11 2009-06-25 GfP (Gesellschaft für Produktivitätsplanung und Produktentwicklung) mbH Vorrichtung zum Halten einer Aktivtafel
DE102008029286A1 (de) 2008-06-11 2009-12-17 GfP (Gesellschaft für Produktivitätsplanung und Produktentwicklung) mbH Vorrichtung zum Halten einer Aktivtafel
DE102010010742A1 (de) 2010-03-02 2011-09-08 GfP (Gesellschaft für Produktivitätsplanung und Produktentwicklung) mbH Vorrichtung zum Halten einer Tafel und Tafelsystem
DE202010017702U1 (de) 2010-09-17 2012-05-23 GfP (Gesellschaft für Produktivitätsplanung und Produktentwicklung) mbH Tafelsystem umfassend wenigstens zwei Tafeln und Verriegelungsmechanismus für ein Tafelsystem
DE102010046630A1 (de) 2010-09-17 2012-03-22 GfP (Gesellschaft für Produktivitätsplanung und Produktentwicklung) mbH Tafelsystem umfassend wenigstens zwei Tafeln, Verriegelungsmechanismus für ein Tafelsystem und ein Verfahren zur Bewegung einer Tafel des Tafelsystems
CN102799334A (zh) * 2011-05-25 2012-11-28 孙怀宽 一种新型的物联网智能白板
CN102799334B (zh) * 2011-05-25 2015-01-21 孙怀宽 一种物联网智能白板
CN104731404A (zh) * 2014-12-10 2015-06-24 朱云 新型黑板
CN104731404B (zh) * 2014-12-10 2018-03-06 朱云 新型黑板
DE102022003063A1 (de) 2022-08-22 2024-02-22 heinekingmedia GmbH Tafelvorrichtung, Tafelanordnung mit einer einbringbaren Zwischenschicht, Tafelsystem, Verfahren zum Herstellen oder Nachrüsten einer Tafel sowie die Verwendung einer einbringbaren Zwischenschicht
EP4328044A1 (fr) 2022-08-22 2024-02-28 Heinekingmedia GmbH Dispositif de panneau, ensemble panneau avec couche intermédiaire pouvant être introduite, système de panneau, procédé de fabrication ou de post-équipement d'un panneau et utilisation d'une couche intermédiaire pouvant être introduite

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Publication number Publication date
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